Preheat oven (electric cooker: 150 °C/circulating air: 125 °C/gas: see manufacturer). Clean the mushrooms, wash if necessary, halve or quarter them if necessary. Dab meat dry. Season with salt and pepper. Heat 1 tablespoon of oil in a large frying pan.
Brown the meat in it all around for about 5 minutes. Remove and place on a baking tray. Bake in a hot oven for about 15 minutes.
Heat 2 tablespoons of oil in hot frying fat. Sauté the mushrooms for 3-4 minutes. Season with salt and pepper. Sprinkle with sugar and caramelise. Deglaze with port wine and vinegar, bring to the boil. Stir in porcini mushroom powder, boil down for about 5 minutes.
Cut the bacon into thin strips and fry in a second pan without fat for about 3 minutes. Coarsely chop uncooked gnocchi. Add the gnocchi and possibly another 1 tbsp. oil to the bacon in the pan. Continue frying for about 3 minutes.
Season to taste with salt and pepper. Remove meat from the oven. Let it rest for a short time and then cut it into slices. Serve on the gnocchi with port wine mushrooms.